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Q&A How to solve Magick::ImageMagickError: no decode delegate for this image format in AdvertisementControllerTest#test_image_paths_should_return_png

1 answer · posted 3y ago by Trilarion‭ · last activity 3y ago by ArtOfCode‭

Question support tests bug

#2: Post edited by

Trilarion‭ · 2022-01-04T17:06:06Z (almost 3 years ago)

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I ran tests (`bin/rails test`) and got
```
Error:
AdvertisementControllerTest#test_image_paths_should_return_png:
Magick::ImageMagickError: no decode delegate for this image format `' @ error/constitute.c/ReadImage/572
app/helpers/advertisements/codidact_helper.rb:23:in `annotate'
app/helpers/advertisements/codidact_helper.rb:23:in `block in codidact_ad'
config/initializers/namespaced_cache.rb:11:in `block (2 levels) in <class:NamespacedEnvCache>'
app/helpers/advertisements/codidact_helper.rb:8:in `codidact_ad'
app/controllers/advertisement_controller.rb:14:in `codidact'
test/controllers/advertisement_controller_test.rb:16:in `block (2 levels) in <class:AdvertisementControllerTest>'
test/controllers/advertisement_controller_test.rb:15:in `each'
test/controllers/advertisement_controller_test.rb:15:in `block in <class:AdvertisementControllerTest>'
```
Version of ImageMagick is 7.1.0-19. It might be related this [Stripe::AuthenticationError](https://collab.codidact.org/posts/285410) because it happens in the AdvertisementControllerTest and on Circle CI, the tests seem to run fine.

I ran tests (`bin/rails test`) and got
```
Error:
AdvertisementControllerTest#test_image_paths_should_return_png:
Magick::ImageMagickError: no decode delegate for this image format `' @ error/constitute.c/ReadImage/572
app/helpers/advertisements/codidact_helper.rb:23:in `annotate'
app/helpers/advertisements/codidact_helper.rb:23:in `block in codidact_ad'
config/initializers/namespaced_cache.rb:11:in `block (2 levels) in <class:NamespacedEnvCache>'
app/helpers/advertisements/codidact_helper.rb:8:in `codidact_ad'
app/controllers/advertisement_controller.rb:14:in `codidact'
test/controllers/advertisement_controller_test.rb:16:in `block (2 levels) in <class:AdvertisementControllerTest>'
test/controllers/advertisement_controller_test.rb:15:in `each'
test/controllers/advertisement_controller_test.rb:15:in `block in <class:AdvertisementControllerTest>'
```
Version of ImageMagick is 7.1.0-19 and was built from source. It might be related this [Stripe::AuthenticationError](https://collab.codidact.org/posts/285410) because it happens in the AdvertisementControllerTest and on Circle CI, the tests seem to run fine.

#1: Initial revision by

Trilarion‭ · 2022-01-04T17:01:37Z (almost 3 years ago)

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How to solve Magick::ImageMagickError: no decode delegate for this image format in AdvertisementControllerTest#test_image_paths_should_return_png

I ran tests (`bin/rails test`) and got

```
Error:
AdvertisementControllerTest#test_image_paths_should_return_png:
Magick::ImageMagickError: no decode delegate for this image format `' @ error/constitute.c/ReadImage/572
    app/helpers/advertisements/codidact_helper.rb:23:in `annotate'
    app/helpers/advertisements/codidact_helper.rb:23:in `block in codidact_ad'
    config/initializers/namespaced_cache.rb:11:in `block (2 levels) in <class:NamespacedEnvCache>'
    app/helpers/advertisements/codidact_helper.rb:8:in `codidact_ad'
    app/controllers/advertisement_controller.rb:14:in `codidact'
    test/controllers/advertisement_controller_test.rb:16:in `block (2 levels) in <class:AdvertisementControllerTest>'
    test/controllers/advertisement_controller_test.rb:15:in `each'
    test/controllers/advertisement_controller_test.rb:15:in `block in <class:AdvertisementControllerTest>'
```

Version of ImageMagick is 7.1.0-19. It might be related this [Stripe::AuthenticationError](https://collab.codidact.org/posts/285410) because it happens in the AdvertisementControllerTest and on Circle CI, the tests seem to run fine.

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